Grassroots.org | 249 followers on LinkedIn. Grassroots.org helps thousands of nonprofit organizations around the country succeed by leveraging technology to accelerate their charitable efforts. We do this by offering an array of free technology tools and services that are easy to implement and manage. Free Membership - As a member of our online community, you will align yourself with thousands of other nonprofits, volunteers, business sponsors and donors and can highlight what your charity is doing, join a forum for discussion, share ideas, collaborate and recruit.